Explosion whistle-alarm.



R. D. BUELL.

EXPLOSION WHISTLE ALARM.

APPLICATION FILED DEC.30,1914.

Patented Jan. 1, 1918.

nor n. scams, or cmoaeo, rumors.

nxrnosron WHISTLE-steam. a

To all whom it may concern Be it known that I, ROY D. BUELL, a citi- Zen of theUnited States, residing at Chicago, in the county of Cookfand State of Illinois, have invented certain new and" useful Improvements in Explosion Whistle;

Alarms, of which the followingis a specification, reference being had to the accompanying drawing, forming a part hereof. Thisfin'vention relates to explosion whistle alarms especially designed -for use in connection with internal combustion or ex losive engines, and which is particularly app icable for use on automobiles and motor-cycles but intended for use, and can be usedgenerally with. internal combustionijr ex lo i engines Where an alarm is desired "or re quired for any purpose. V

The objects of the invention are to furnish a whistle alarm of simple construction, which will give, in use, an effective, positive and reliable notice and warning of danger; to mount the whistle on the engine cylinder in direct communication with the explosion chamber; and thus utilize the gasunder a high pressure and in a state of combustion for blowing the whistle; thereby obtaining the full benefit of the high pressure of the exploded gas or charge in operating the whistle and giving the alarm; to operate the whistle alarm under conditions and environments adapted for obtaining a pulsating blowing or sounding ,of the whistle by reason of the varying fpre'ssilrein the engine cylinder; topositively [control the pressure admitted direct from the explosion chamber of the gas in a state "of combustion and discharged into the whistle bell for sounding the'alarm, by a valve' oapable of being opened to a greater or less extent as may be required for the nature of the alarm to be given, varying from a lowtone to a high startling tone; and'to improve the construction and operation of the device as a whole. i

The invention consists in the features of construction, application, arrangement and combination of parts hereinafter described and claimed: i In the drawings: 1 s Figure 1 is a side elevation, showin' the device attached'in one form to a cylin eriojl an internal combustion or explosive engine Fig.2, a sectional elevation of the casing;

showing the controlling valve, its stemjafid its operating lever in elevation, and Fig. 3, a Sectional elevation of a modified form of specification of Letters Patent. iPa tanted Jan, 1, 1918. ap ncaiion'mea December 30, 1 914. s-aria. $79,938

casing, showingthe controlling yalve in section,and its stemand .ope'ratingleverin elevation and showing also'the whistle bell or body in section.

The whistle alar hasa mounting inthe form of a casing,'cagc, orhousing,having abody or wall'l of'acurved elbow shape, as shown in Figs. 1 and 2, with an outlet end Qan'dja'n inletend 3 and inclosing a vent passage 4, leading from the inlet end'tothe outlete'nd But instead of a curved elbow shaped bodyflor wall the oasing', can have a straightbody or wall 1, an outlet end 2 in angle relation to the'bod'y or wall 1, and anfinlet end 3, in line with the i of the present invention leading from the inlet end'to the outlet end, as shown in Fig. 3. =The outlet end 2 in Figs. 1 and 2 has an interior screw thread for attaching the Whistlebell or body, while in Fig. 3 the outlet end Qhas an exterior screw thread for attaching the whistle bell or body. The inlet end 3, in both forms of the casing, has an exterior screw thread, for attaching or mounting the whistle alarm on the engine cylinder, as shown in Fig. 1. The casing, in both forms of construction can be made of cast metal, or other material suitable for the purpose. v

The construction shown in Figs. 1' and 2 has a bracket or base 5, with a lower ear 6 and an upper ear 7, and the under face of the base 5, and the ears 6 and 7 is curved to fitt'heouter' face of the body or wall 1 of the casing.- The base 5 is attached to the body 1 by screws 8 or other suitable means; and extending upwardlyor outwardly from the head or base 5 is a post, 9, the upper or outer end 10 of which is slotted to receive and support a .valve operating lever. The construction shown in Fig. 3 dispenses with the base 5, and-has the post 9 with its slotted end 10 cast or formed with the body 1 of the valvecasing; and it is evident that the base with its post, 9 could also'be cast or 'iier 'seatifig rat-1 2- valve is, andfthe seating faces 11" and 12" are preferably ground so as to furnish a tight and non;

leakable fit between these seating faces,-when the valve 13 is seated and prevent any escape of exploded gas around the valve 13, when seated, and also hold the charge against any escape under compression, with the result that the presence of the whistle alarm on the engine cylinder and in direct communication with the compression and explosion chamber in no Way interferes with, or destroys, or impairs the operation of the cylinder in receiving, compressing and exploding the charge, and when the valve is held open it will admit but a very small percentage of air during the intake stroke of the engine and the whistle will start to blow or sound the alarm during compression, reaching a maximum of sound when the explosion occurs, which will produce a pulsating tone that is very effective as a warning.

The valve stem 14 of the valve 13 passes up or out through a hole 15, formed therefor in the body in wall 1 of the valve casing and in the base 5, which hole fits the valve stem sufficiently close for its wall or face to furnish a guideway by-which the valve stem 14 will be held and maintained in a straight line movement in opening and closing the valve 13, thus causing a positive and reliableclosing or sealing of the valve so as to be non-leakable against the escape of the exploded gas or the compressed charge or durmg compression of the charge, when the valve is returned to its seat, after having been opened or unseated to sound the alarm. The projected end of the valve rod or stem 14, in the arrangement shown is encircled by a coil spring 16; one end of the spring rests against the upper face of the bracket or base 5, as in Figs. 1 and '2, or against a flat face on the body or wall 1, as in Fig} 3, and the other end of this spring abuts against a cross pin 17 passing through the end of the valve stem. This spring 16 is a compression spring and has sufficient force to return the valve 13 to its seat and hold it seated after each opening of the valve. The valve 13 is opened, in the arrangement shown, by an L lever having a long arm 18 and mounted on a pin 19 in the slotted end 10 of the post, for its short arm 20 to lie over and in contact or nearly so with the end of the valve stem 14, so that a slight outward movement of the long arm 18 of the L lever will depress the short arm 20 and force the valve stem 14 downward against the force of the compression spring 16 to unseat the valve 13 and allow the gas under full explosive pressure to enter the eduction or vent passage 4 and discharge at the outer end of such passage into the whistle and sound the alarm. The spring 16 with the release of the outward pull on the long arm 18 of the L lever will return the valve stem 14 to its normal position seating the valve 13, and at the same time Will return the L lever to its normal condition ready for the next outward pull. The valve 13, as shown in Fig. 2, has a cross slot 21 in its inner face which can be engaged by a screw driver, or other suitable instrument, by means of which the valve can be turned to grind together the seating faces 11 and 12 and insure a tight non-leakable joint or contact between the seating faces 11 and 12, when the valve is closed as shown in Fig. 2. As shown in Fig. 3, the body or wall 1 of the outer face of the valve casing above the threaded inlet end is formed with a plurality of flat faces 22 for receiving a wrench by means of which the casing can be screwed into the valve cap of the engine cylinder, which is the preferred position for attaching the whistle alarm of the present invention; but the attachment can be otherwise made so long as the mode and oint of attachment is one which will furnlsh free and direct communication between the explosion or compression chamber of the engine cylinder and the eduction or vent passage 4, when the valve 13 is opened or unseated.

As shown in Fig. 2, the valve 13 and stem 14 are formed of a single piece, while as shown in Fig. 3 the valve stem 14 has a neck 23 onto which the valve 13 is entered and or housing has threaded thereon the whistle alarm, in the arrangement shown. This whistle alarm is preferably made of a single piece of material and of the form shown and can be made of brass or aluminum castng and has a wall or shell 24, inclosing a sound chamber 25 with an escape opening 26 at the base end of the wall. The base end of the wall has a narrow passage or slot 27 formed in the end of wall 28, through which a thin sheet "or film of escaping gas or air under engine. pressure from the eduction or vent passage 4 is projected into the sound chamber 25 and across the opening 26 producing a resonant, harmonious and agreeable chord. The base end of the whistle alarm terminates in a neck 29 with a chamber 30 outside of the cross Wall 28, from which chamber 30 the narrow passage 26 leads. The neck 29 has an interior screw thread for entering the neck onto a connecting nipple or onto the threaded outlet end 2 of the casing or fitting. The neck 29 as shown has a plurality of flat faces 31 to receive a suitable wrench for threading the Whistle onto the casing. :The whistle chime being produced by three different tones, one of which is uite low and roduces a pleasant sound for t e whistle. he long arm 18 of the L lever has attached to its extreme end 'a cord or cable 32, which is extended back and connected to the steering column of an automobile or to some other convenient place on the machine or apparatus with which the explosive engine is used, where the cord can be grasped readily by the driver or operator of the machine or apparatus, for a pull on the cord or cable to cause the L lever to operate and open or unseat the controlling valve 13, as already. described.

The whistle alarm can be attached to the engine cylinder in any suitable manner as by entering the neck or inlet end 3 of the cage, or casing,- into the valve cap or the cylinder, as shown in Fig. 1.

The gist of the present invention is utilizing under perfect control, the gas under full explosion pressure from the engine cylinder direct in sounding the whistle and giving the alarm and in obtaining the pulsating elfect of the whistle blast. It is to be understood that in carrying out the spirit of the invention changes can be made without departing from the end sought provided the structure is maintained within the scope of the appended claim. The whistle instead of having a single chamber 25, with a single opening 26 may have this chamber partitioned ofi into two or more chambers of different volume, each provided with an opening 26 and with a slot or slit, corresponding to the slot or slit 27, the several chambers being so proportioned in volume as to produce a chime.

What I claim as new and desire to secure by Letters Patent is:

An explosion whistle alarm for automobiles comprising an elbow-shaped fitting adapted to be attached at its lower vertical end to the head ofa gas engine cylinder, a valve stem extending through said vertical portion, a valve member on said stemv lying at the lower end of said vertical portion and controlling communication between the exhaust passage of the engine and the interior of said fittlng, a pivoted valve actuating member secured exteriorly to the fitting and at the upper vertical end thereof and adapted to engage said valve stem and move the same to open the valve, the outer horizontal portion of said fitting being exteriorly threaded to receive the whistle member, said whistle member comprising a hollow body tapering at one end, a horizontal neck extending from said tapering portion and interiorly threaded to mesh with the threads on the horizontal portion of the fitting, the said whistle member continuing outward from said tapered portion in a dome-shaped formation, a cross-wall formed at the inner ROY l). BUELL.

Witnesses:

OSCAR W. BOND, FRANCES M. Fnos'r. 

